The origin of the hard X-ray excess in AGN is the subject of active debate.Recent studies have suggested the presence of a hard excess in a significantfraction of Type I AGN, possibly due to partial covering by Compton thickmatter. This finding appears at odds with the standard AGN Unified Model, wheresuch obscuration would only be predicted in type II AGN. Here we propose a joint120 ks NuSTAR and 30 ks XMM-Newton observation of the luminous NLS1 galaxy TONS180, where a strong hard excess was reported in a previous Suzaku observation.With the proposed observations we will differentiate between a hard excesscaused by a partially covering absorber, or by relativistically blurredreflection. We will also discriminate between competing scenarios of the energy dependent time lags.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2016-06-13T05:19:07Z/2016-06-13T14:12:27Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Mr GABRIELE A. MATZEU, 2017, 'SOLVING THE ORIGIN OF THE HARD X-RAY EXCESS IN THE NARROW LINED SEY 1 comma TON S180', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gfwguiy
